等一段时间出现的错误代码:
Error at APConnect.
An error occurred during interprocess communication .The cause of the error is unkonw,code:4.
最佳答案
参考:
http://www.automation.siemens.com.cn/club/bbs/post.aspx?b_id=5&a_id=236297
提问者对于答案的评价:
还是不太清楚
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